<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card class="box-card">
      <!-- 搜索区域 -->
      <el-row :gutter="10">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getUsersList">
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUsersList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary text" @click="dialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userlist" border stripe>
        <el-table-column label="#" type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <!-- 作用域插槽, scope.row可以获得当前行的所有数据 -->
          <template slot-scope="scope">
            <el-switch
              v-model="scope.row.mg_state"
              @change="userState(scope.row)"
            ></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <!-- 编辑按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="editDialog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUser(scope.row.id)"
            ></el-button>
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top-start"
              :enterable="false">
              <!-- 分配角色按钮 -->
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)">
              </el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 3, 5]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="dialogVisible"
      width="50%"
      @close="addClose"
    >
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addNewUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户对话框 -->
    <el-dialog 
      title="修改用户" 
      :visible.sync="editDialogVisible" 
      width="50%"
      @close="editClose">
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editNewUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色对话框 -->
    <el-dialog
      title="提示"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close="setRoleClose">
      <div>
        <p>当前的用户: {{userInfo.username}}</p>
        <p>当前的角色: {{userInfo.role_name}}</p>
        <p>分配新角色:
          <el-select v-model="selectRoleId" placeholder="请选择">
            <el-option 
              v-for="item in rolesList" 
              :key="item.id" 
              :label="item.roleName" 
              :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>       
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRole">确 定</el-button>
      </span>
   </el-dialog>
  </div>
</template>

<script>
export default {
  name: 'Users',
  data() {
    // 验证邮箱的正则
    var checkEmail = (rule, value, callback) => {
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        // 正确的邮箱
        return callback()
      } else {
        return callback(new Error('请输入正确的邮箱'))
      }
    }
    // 验证手机号的正则
    var checkmobile = (rule, value, callback) => {
      const regmobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regmobile.test(value)) {
        // 正确的手机
        return callback()
      } else {
        return callback(new Error('请输入正确的手机号'))
      }
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        // 查询参数
        query: '',
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 2,
      },
      userlist: [],
      total: 0,
      // 控制添加对话框的显示与隐藏
      dialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: '',
      },
      // 表单的验证规则
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' },
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 16, message: '长度在 6 到 16 个字符', trigger: 'blur',},
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' },
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkmobile, trigger: 'blur' },
        ],
      },
      // 修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 请求修改用户返回的用户信息
      editForm: {},
      // 修改用户的验证规则
      editFormRules:{
        email:[
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile:[
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkmobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 分配角色的用户信息
      userInfo:{},
      // 角色列表
      rolesList:[],
      // 已经选中的角色id
      selectRoleId:'',
    }
  },
  created() {
    this.getUsersList()
  },
  methods: {
    async getUsersList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo,
      })
      //console.log(res)
      if (res.meta.status !== 200)
        return this.$message.error('获取用户列表失败')
      this.userlist = res.data.users
      this.total = res.data.total
    },
    // 页码改变时触发
    handleSizeChange(newSize) {
      //console.log(newSize);
      this.queryInfo.pagesize = newSize
      this.getUsersList()
    },
    // 当前页面变动时触发
    handleCurrentChange(newVal) {
      //console.log(newVal);
      this.queryInfo.pagenum = newVal
      this.getUsersList()
    },
    // 用户状态的改变
    async userState(userInfo) {
      console.log(userInfo)
      const { data: res } = await this.$http.put(
        `users/${userInfo.id}/state/${userInfo.mg_state}`
      )
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('更改用户状态失败')
      } else {
        this.$message.success('更新用户状态成功')
      }
    },
    // 监听添加用户对话框关闭的重置功能
    addClose() {
      this.$refs.addFormRef.resetFields()
    },
    // 确定添加用户的预校验和请求数据
    addNewUser() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        // 发添加用户的请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) return this.$message.error('用户添加失败')
        this.$message.success('用户添加成功')
        // 隐藏添加用户对话框
        this.dialogVisible = false
        // 重新获取用户列表
        this.getUsersList()
      })
    },
    // 查询用户信息
    async editDialog(id) {
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) return this.$message.error('查询用户失败')
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听修改用户取消按钮关闭的重置功能
    editClose(){
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editNewUser(){
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        // 发修改用户的请求
        const { data: res } = await this.$http.put('users/' + this.editForm.id, {         
          email:this.editForm.email,
          mobile:this.editForm.mobile
        })
        if (res.meta.status !== 200) {
          return this.$message.error('修改用户失败')   
        }
        // 关闭对话框
        this.editDialogVisible = false
        // 更新用户列表
        this.getUsersList()
        this.$message.success('修改用户成功')  
      })
    },
    // 根据id删除用户
    async removeUser(id){
      const confirmRes = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(error => error)
        // 如果用户取消删除，返回字符串cancel
        // 如果用户确定删除，返回字符串confirm
        //console.log(confirmRes)
        if(confirmRes === 'cancel') {
          return this.$message.info('已取消删除')
        }
        const {data:res} = await this.$http.delete('users/' + id)
        if(res.meta.status !== 200) return this.$message.error('删除用户失败')
        this.$message.success('删除用户成功')
        this.getUsersList()
    },
    // 分配角色按钮
    async setRole(userInfo){
      this.userInfo = userInfo
      // 展示对话框之前，获取角色列表
      const {data:res} = await this.$http.get('roles')
      if(res.meta.status !== 200) return this.$message.error('获取角色列表失败')
      //console.log(res);
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    // 点击确定按钮，分配角色
    async saveRole(){
      if(!this.selectRoleId){
        return this.$message.error('请选择分配的角色')
      }
      const {data:res} = await this.$http.put('users/' + this.userInfo.id + '/role',
      {rid: this.selectRoleId})
      if(res.meta.status !== 200) return this.$message.error('分配角色失败')
      this.$message.success('分配角色成功')
      this.getUsersList()
      this.setRoleDialogVisible = false
    },
    // 关闭分配角色对话框
    setRoleClose(){
      this.selectRoleId = ''
      this.userInfo = {}
    },
  }
}
</script>

<style lang="less" scoped>
.el-breadcrumb {
  margin-bottom: 15px;
}
.el-card {
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.1) !important;
}
.el-table {
  margin-top: 20px;
  font-size: 14px;
}
.el-pagination {
  margin-top: 20px;
}
</style>
